05-05-2005 12:13 AM - edited 03-03-2019 09:29 AM
We are currently running a 7206VXR router with two FastEthernet ports to an ISP via a 1 Meg link and we are in a process of purchasing a second router with the same spec and connect it to a different ISP also via a 1 Meg link. Which is the best way to load balance traffic between the two links? Which protocol must we use, OSPF, BGP,etc...
05-05-2005 03:43 AM
It is worth reading about BGP Multi-Homing. Check out this document for a configuration example
http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a008009456d.shtml
Not to sure if there are any limitations using per packet / destination load balancing with the connection from 2 ISP's i would not think so
http://www.swcp.com/~jgentry/cisco/cisco-load.html
Nathan
05-05-2005 06:13 AM
i was facing such situation.our company use 2 uplink to Internet via 2 diffrent ISP.we want to loadbalance traffic on both link and increase avalibility of our published servers so that servers be accessible throuth 2 uplinks.we use cisco 2621XM and 3662 for each link and we don't want useing any form of Dynamic routing or BGP.searching cisco website to find such feature come we no result.therefor i use a Linux box for this purpose.Linux kernel have ability to loadbalance (with PBR and equal cost multipath load balancing and NAT/PAT) egress traffic and high avalibility for ingress traffic(if u want your servers be accessible even one of your uplink goes down).it also can detect dead gateway and work fine with your existing cisco routers.
see www.lartc.org (Linux Advance Routing and Trffic control)
05-05-2005 06:33 AM
i was facing such situation.our company use 2 uplink to Internet via 2 diffrent ISP.we want to loadbalance traffic on both link and increase avalibility of our published servers so that servers be accessible throuth 2 uplinks.we use cisco 2621XM and 3662 for each link and we don't want useing any form of Dynamic routing or BGP.searching cisco website to find such feature come we no result.therefor i use a Linux box for this purpose.Linux kernel have ability to loadbalance (with PBR and equal cost multipath load balancing and NAT/PAT) egress traffic and high avalibility for ingress traffic(if u want your servers be accessible even one of your uplink goes down).it also can detect dead gateway and work fine with your existing cisco routers.
see www.lartc.org (Linux Advance Routing and Trffic control)
05-05-2005 07:01 AM
It may also be worth looking a gateway loadbalancing protocol (GLBP)
This has the ability to share traffic across to connections on multiple routers.
another alternative would be a Foundry / Cisco loadbalancer
05-05-2005 07:31 AM
Look in OER feature (Optimized edge routing) whiich is available from I think 12.3T.
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